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Unionidae
Margaritiferidae
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Species & Genus Richness offreshwater musselsby Taxonomy
Species & Genus Richness offreshwater bivalves by Family
North America
Central America
South America
Afrotropics
North Eurasia
East Asia
Australasia
Species Richness & Endemism offreshwater mussels by Geography
Data last updated Tue 02 June 2026
[author ?]. 1957. Zentrabl. Geol. Paläont. (1957) 2.
(error for Nippononaia Suzuki, 1941)[author ?], 1957. Zentrabl. Geol. Paläont. (1957) 2: 137. Type species: Unio (Nippononaia) ryosekiana Suzuki, 1941 = Nippononaia ryosekiana